1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83888a621aaec935b22ea037c86c1ec10163196432928c66269b697c6be3f3ce. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06de8735-f6cb-4589-9cc8-bf85cc964f0d.json and https://artists.proofprofile.net/proofs/artist/06de8735-f6cb-4589-9cc8-bf85cc964f0d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb915ddc3e4e540e3352518f8935a61439fde94a41c9e9961921d2cabe8fdfbe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEXUD1600602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3cb057b49a162c19eb4ec4417acf079e38192d451fd6fed466ec97ffa7f83e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEXUD1600603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcea55061a5c04b7d08b9bdce7c436798db3f96696e04f4baf94feafd6804ec. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEXUD1700303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80b1a5875a83b9681f1ddb706e9ff5086c5d18bbdc9650a29ea2eee73faee44. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEXUD1700304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ca4eb20a1fda28004aa45ce9d2ac92c1b41001ee2ac39be67f3678dc09cb17. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEXUD1700305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18138a0ed26671b70bfe917cbb8a448192dff99f8c0540f9a378aa932b242832. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEXUD1700601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe61a5f6778e6a79512cce5f502cad8803167c6ac24c5ab812f9ca45ff9b01d1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWDL6143932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8ccb4daa331666b913545fac6110fc166d3de60f1f5b08caa1daf08d0a3695. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6A92086563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed01443377e4cf92f9b1be9efbbb8d6e8263f4c527c4901c65ab25dda6ba943. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6I32032062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3cd7c134c0f0b4b727b06dffca6d27fb6da8fc35d380993f005ae7c264f5c2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6SA2115444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b046d21c1ea9b8b1d1c2d6e354140ee09ec9a6a7b2a402e46d2981a129ec95b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5BU2366654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126a3f53e3870b853f8c8b4eb5298577cf031d1f9e718c332c4d64d8e1e5fc2e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6XY2364137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a54c27bfe96937437db21095232b841ac613f018ce58a6157c6b319038c755. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6HN2456976.
Hon e redo (feat. K27, Blizzy, Mwuana, Elias Abbas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084efbc743496cc46ba4c230ca9de75b6c618581658516c77298d880fff92224. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE56Z1800301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd598bac867688f75dcd3efedce7079541de0ff7572d5133c168ec4a41fcd93e5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEXUD1600301.